The Darién Gap is one of the most dangerous migrant routes in the world and the only way to get to the U.S. from South America by land. But despite the risks, more and more people — including children — are braving the 70-mile stretch of harsh terrain. Atlantic staff writer Caitlin Dickerson and photographer Lynsey Addario recently made the trek with several families to show just how treacherous it is on the ground. Apple News In Conversation host Shumita Basu spoke with Dickerson about what she saw — and how U.S. immigration policy has created more risks for people every step of the way.